Tennis Court Dimensions: Standard Size, Backyard Minimums, and Space Needed
A regulation tennis court playing area is 78 feet long by 36 feet wide (2,808 square feet) for doubles, and 78 by 27 feet (2,106 square feet) for singles. Those numbers are set by Rule 1 of the International Tennis Federation’s Rules of Tennis and are the same for a backyard court and for Wimbledon. The number that actually determines whether you can build one is different: the total fenced footprint. The ITF’s recommended minimum run-off makes that 120 by 60 feet for international competition and 114 by 56 feet for club and recreational play, and about 110 by 50 feet is the practical floor for a private residential court.
The gap between those two figures is where most backyard tennis projects go wrong. A homeowner measures 78 by 36 feet, finds it fits, and discovers during design that the court needs almost twice that area.
Key takeaways
| Measure | Figure |
|---|---|
| Playing area, doubles | 78 ft x 36 ft |
| Playing area, singles | 78 ft x 27 ft |
| ITF footprint, international competition | 120 ft x 60 ft |
| ITF footprint, club and recreational play | 114 ft x 56 ft |
| Practical residential minimum | 110 ft x 50 ft (5,500 sq ft) |
| Playing area, square feet | 2,808 sq ft doubles, 2,106 sq ft singles |
| Built court, square feet | 5,500 to 7,200 sq ft |
| Net height | 3 ft 6 in at posts, 3 ft at center |
| Standard fence height | 10 ft behind baselines |
| Indoor clear height above the net | 29.6 ft (9.0 m) minimum |
The playing area, line by line
Every line on a tennis court is fixed by Rule 1 of the ITF Rules of Tennis. None of it scales down for residential use.
| Element | Dimension |
|---|---|
| Overall length, baseline to baseline | 78 ft |
| Width, doubles sidelines | 36 ft |
| Width, singles sidelines | 27 ft |
| Doubles alley, each side | 4 ft 6 in |
| Baseline to net | 39 ft |
| Service line to net | 21 ft |
| Service box, each | 21 ft x 13 ft 6 in |
| Center service line to sideline | 13 ft 6 in |
| Center mark on each baseline | 4 in long, drawn inside the court |
| Net height at posts | 3 ft 6 in |
| Net height at center | 3 ft |
| Net post offset outside doubles sideline | 3 ft |
| Singles sticks, when a doubles net is used for singles | 3 ft outside each singles sideline |
| Full-court diagonal, doubles | 85 ft 11 in (26.18 m) |
The center service line and center mark are exactly 2 inches wide; every other line is 1 to 2 inches wide, except the baselines, which may be up to 4 inches. Every dimension above is measured to the outside of the lines, not the inside, which is the most common layout error we are called in to correct. See our sports court striping guide for line widths by sport and how blended pickleball lines are added to a tennis court.
How many square feet is a tennis court?
A tennis court is 2,808 square feet of playing area for doubles and 2,106 square feet for singles. The court you pave and fence is two to three times that: 7,200 square feet at the ITF’s guide for international competition, 6,384 square feet at its guide for club play, and about 5,500 square feet at the smallest footprint we would build for a private residence.
| Court | Dimensions | Square feet | Square metres | Acres |
|---|---|---|---|---|
| Singles playing area | 78 ft x 27 ft | 2,106 | 195.6 | 0.05 |
| Doubles playing area | 78 ft x 36 ft | 2,808 | 260.9 | 0.06 |
| Residential minimum footprint | 110 ft x 50 ft | 5,500 | 511.0 | 0.13 |
| ITF club and recreational footprint | 114 ft x 56 ft | 6,384 | 593.1 | 0.15 |
| ITF international competition footprint | 120 ft x 60 ft | 7,200 | 668.9 | 0.17 |
| USTA orange-ball court (doubles) | 60 ft x 27 ft | 1,620 | 150.5 | 0.04 |
| USTA red-ball court | 36 ft x 18 ft | 648 | 60.2 | 0.01 |
The metric figures follow the ITF’s own specification, which defines the doubles court as 23.77 by 10.97 metres. Every square-foot figure in the table is simple length times width; the reason quoted numbers online disagree is that some sources give the lined area and others give the fenced pad without saying which.
Tennis is the court where that distinction matters most. A tennis court’s lined playing area is about 40 percent smaller than an NBA basketball court’s (2,808 against 4,700 square feet), yet the pad it needs is larger, because tennis requires 16 to 21 feet of run-back behind each baseline where basketball rulebooks ask for 3 to 10 feet of clearance. A pickleball court, for comparison, is 880 square feet of playing area on a 1,800 square foot pad.
For budgeting, use the footprint, not the playing area. Base, asphalt or concrete, acrylic surfacing and fencing are all priced on the paved area, which is why our tennis court resurfacing cost guide works its per-square-foot figures from 7,200 square feet rather than 2,808.
Total footprint: the number that decides your project
The playing area is only the painted rectangle. The buildable court adds run-back behind each baseline and side run outside each sideline, because players do not stop at the line.
| Standard | Run-back (each end) | Side run (each side) | Total footprint | Total area |
|---|---|---|---|---|
| ITF guide, international competition | 21 ft (6.40 m) | 12 ft (3.66 m) | 120 ft x 60 ft | 7,200 sq ft |
| ITF guide, club and recreational play | 18 ft (5.48 m) | 10 ft (3.05 m) | 114 ft x 56 ft | 6,384 sq ft |
| Practical residential minimum | 16 ft | 7 ft | 110 ft x 50 ft | 5,500 sq ft |
The ITF figures are recommended minimums, not rules. Appendix X of the 2026 Rules of Tennis gives them “as a guide”, and the ITF’s technical booklet repeats 21 and 12 feet as the international-competition values in its table of court tolerances. Neither document sets a larger footprint for any level of play. US practice agrees: the construction guidelines of the US Tennis Court and Track Builders Association, now the American Sports Builders Association, ask for 21 feet behind each baseline for tournament play, allow 18 feet otherwise, and want 12 feet at the sides, accepting 10 feet only where space is limited. Our 110 by 50 foot residential floor sits below both guides, which is why we treat it as a floor and not a target.
Below 110 by 50 feet, stop and reconsider. Older guidance circulating online suggests figures like 90 by 45 feet for a “compact” residential court. That is not a compact court, it is a court with 6 feet behind each baseline. A player receiving a deep serve is into the fence before the ball has finished bouncing. If your usable area will not reach roughly 110 by 50, the honest options are a youth-size court, a shared multi-sport surface, or a pickleball court, which needs a 30 by 60 foot footprint rather than 5,500 square feet.
For context, 5,500 square feet is about an eighth of an acre of flat, buildable ground, before you account for fencing, access for equipment, zoning setbacks, and the impervious-coverage limits most Connecticut towns apply. See do you need a permit to build a sports court in Connecticut for what that review involves.
Residential versus professional: what actually differs
The playing area does not change. Everything around it does.
| Aspect | Professional venue | Residential court |
|---|---|---|
| Playing area | 78 ft x 36 ft | 78 ft x 36 ft (identical) |
| Total footprint | 120 ft x 60 ft or larger | 110 to 114 ft x 50 to 56 ft |
| Fencing | Full enclosure plus spectator separation | 10 ft chain link or vinyl-coated, 8 to 10 ft sides |
| Surfaces | Hard court, clay, or grass | Acrylic hard court, cushioned acrylic, occasionally synthetic turf |
| Lighting | 100 foot-candles for professional and televised play (IES RP-6 Class I) | LED pole-mounted, typically 4 to 8 poles, designed near 30 foot-candles (Class IV) |
| Amenities | Seating, officials’ chairs, broadcast positions | Benches, windscreen, occasionally a rebound wall |
The one dimension homeowners most often try to trade away, side run, is the one that hurts soonest. Wide play in doubles happens on every point; the deep lob that tests run-back does not.
Youth and shortened courts
If the site genuinely will not hold a full court, there are two standardized shortened courts for junior play. Appendix VIII of the ITF Rules of Tennis allows them for 10 and under competition as a range of sizes, and the USTA’s standard sizes sit inside those ranges. These are real, officially specified courts, not improvised ones.
| Court | USTA size | ITF range | Net at center (ITF) | Ball and players (ITF) |
|---|---|---|---|---|
| Red | 36 x 18 ft | 36 to 42 x 14 to 20 ft | 31.5 to 33 in | Red ball, up to age 8 |
| Orange | 60 x 21 ft singles, 60 x 27 ft doubles | 58 to 60 x 20 to 27 ft | 31.5 to 36 in | Orange ball, ages 8 to 10 |
| Green | Full court, 78 x 36 ft | Rule 1 court | 3 ft | Green ball, advanced players aged 9 to 10 |
The red court’s 31.5 to 33 inch net is 2 ft 7.5 in to 2 ft 9 in, against 3 ft on a full court. A 60 by 21 foot orange-ball court needs roughly a 78 by 36 foot footprint with run-off, which fits on lots that cannot take a full court. Note that a tennis “half court” is not a defined size. Unlike basketball, tennis has no officially recognized half-court dimension.
Orientation, slope and fencing
Three specifications are as fixed as the dimensions themselves:
- Orientation: north-south long axis. This is standard US court-building practice, so players are not serving into a low sun; the ITF Rules of Tennis do not set an orientation. Lay the court out from true north, not from a compass needle, which in Connecticut points about 13 degrees west of true north. This cannot be changed after the base is graded. The same logic, with tighter tolerances, applies to pickleball court orientation, where our sun model for Hartford and Miami shows what each degree of rotation costs.
- Slope: one plane, no steeper than 1 percent. The ITF’s technical booklet caps acrylic and other impervious hard courts at 1:100 (1 percent) and clay and grass at 1:200 (0.5 percent), and where a court must be sloped it prefers the fall to run side to side rather than end to end. US specifications commonly write it as 1 inch of fall per 10 feet, which is 0.83 percent. Never crown a tennis court. Details and the surface systems that sit on top of it are in our base and surface systems guide, and drainage specifics in tennis court drainage solutions for homeowners.
- Fence: 10 feet behind the baselines. Sidelines 8 to 10 feet. The US court builders’ guidelines give 10 feet as the backstop height for most installations and accept 8 feet on some residential courts. This is the most common residential regret when value-engineered down.
If you plan to light the court, pole positions have to be set before the base goes in, since footings sit outside the surface. See planning tennis court lighting for night play.
Indoor courts: clear height
Indoors, the footprint is the same and height becomes the constraint. The ITF recommends at least 29.6 feet (9.0 metres) of clear height above the net, and its technical booklet asks for at least 17.7 feet (5.4 metres) above the baselines. Indoor or covered show courts need 10 metres, about 32.8 feet, unless the ITF approves otherwise. Measure to the lowest obstruction over the court, such as a light fixture, duct or sprinkler main, not to the roof deck. That is why a building that holds several pickleball courts at their 18 foot minimum often cannot take one tennis court; see indoor court construction in Connecticut for building types and costs.
What this costs to build
Dimensions drive cost more than any other variable, because base and surfacing are priced by area. A court that grows from 110 by 50 to 120 by 60 adds 1,700 square feet, roughly 31 percent more surface. Full current pricing is in our tennis court cost guide for Connecticut and the broader backyard sports court cost guide.
Resurfacing intervals are a function of use and climate rather than size: acrylic surfaces on a residential court typically need recoating every 4 to 8 years in the Northeast.
Frequently asked questions
What are the dimensions of a tennis court?
A regulation tennis court playing area is 78 feet long by 36 feet wide for doubles, and 78 feet by 27 feet for singles. The net is 3 feet 6 inches high at the posts and 3 feet high at the center. Each service line sits 21 feet from the net, and each baseline sits 39 feet from the net. These dimensions are set by the International Tennis Federation (ITF) Rules of Tennis and are identical for recreational and professional play.
How many square feet is a tennis court?
A tennis court playing area is 2,808 square feet for doubles (78 by 36 feet) and 2,106 square feet for singles (78 by 27 feet). That is only the lined rectangle. The fenced court you actually build is 7,200 square feet at 120 by 60 feet, the ITF’s recommended minimum for international competition, 6,384 square feet at 114 by 56 feet, its guide for club and recreational play, and about 5,500 square feet at the practical residential minimum of 110 by 50 feet.
How much space do you need to build a tennis court?
You need far more than the 78 by 36 foot playing area. The ITF Rules of Tennis recommend at least 21 feet behind each baseline and 12 feet beside each sideline for international competition, which makes a 120 by 60 foot court, and 18 and 10 feet for club and recreational play, which makes 114 by 56 feet. The practical minimum for a private residential court is about 110 by 50 feet, which gives 16 feet of run-back behind each baseline and 7 feet outside each sideline. Below roughly 110 by 50 the court is playable but players will run out of the fence on deep returns.
Can you fit a tennis court in a backyard?
Yes, if you have enough usable, buildable, reasonably flat ground. A 110 by 50 foot court footprint is 5,500 square feet, about an eighth of an acre, and that is before fencing, setbacks and equipment access, which in practice push the land a court needs toward a quarter acre. Most Connecticut residential zoning also imposes side and rear setbacks and impervious-surface coverage limits, so the buildable envelope is usually smaller than the lot line suggests. A site walk answers this faster than a tape measure.
How big is a half tennis court or a youth tennis court?
The ITF Rules of Tennis allow two shortened courts for 10 and under competition: a red court 36 to 42 feet long and 14 to 20 feet wide, and an orange court 58 to 60 feet long and 20 to 27 feet wide. The USTA standard sizes sit inside those ranges: red at 36 by 18 feet for players up to about age 8, and orange at 60 by 21 feet for singles or 60 by 27 feet for doubles for players aged 8 to 10. A half court is not a defined tennis dimension the way a basketball half-court is.
Are residential and professional tennis court dimensions different?
The playing area is identical. The difference is entirely in the surrounding space, the fencing and the amenities. A professional venue provides 120 by 60 feet or more of enclosed surface plus seating, officials’ positions and broadcast clearance, while a residential court commonly runs 110 to 114 feet by 50 to 56 feet with 10 foot fencing. Anyone who tells you a backyard court needs a smaller playing area is describing a youth court, not a shortened regulation one.
What is the minimum fence height for a tennis court?
Ten feet is the standard fence height behind the baselines, which is what stops most deep returns from leaving the court. The US court builders’ construction guidelines give 10 feet for most installations and accept 8 feet on some residential courts. Sidelines are commonly 8 to 10 feet. Going below 10 feet at the ends is the most common regret on residential courts, because ball retrieval, not appearance, is what drives day-to-day satisfaction with a fence.
Which direction should a tennis court face?
North to south, with the long axis of the court running north-south so players are not serving into a rising or setting sun. This is standard US court-building practice; the ITF Rules of Tennis do not set an orientation. Lay the court out from true north, not from a compass needle, which in Connecticut points about 13 degrees west of true north. Orientation is the one decision on a court that cannot be changed after the base is graded.
How high does the ceiling need to be for an indoor tennis court?
The ITF recommends at least 29.6 feet (9.0 metres) of clear height above the net, and its technical booklet asks for at least 17.7 feet (5.4 metres) above the baselines. Indoor or covered show courts need 10 metres, about 32.8 feet, unless the ITF approves otherwise. Measure to the lowest obstruction over the court, such as a light fixture, duct or sprinkler main, not to the roof deck.
Sources
- International Tennis Federation, Rules of Tennis 2026: Rule 1 (court, net and lines), Appendix VIII (red and orange courts for 10 and under competition), Appendix X (recommended run-off and indoor clear height).
- International Tennis Federation, Technical Booklet 2025: Table 4 (slope by surface) and Table 5 (dimension tolerances, run-off and ceiling height).
- International Tennis Federation, Court Size (court plan and show-court height).
- United States Tennis Association, youth court sizes for red, orange and green ball.
- U.S. Tennis Court and Track Builders Association (now the American Sports Builders Association), Guidelines for Tennis Court Construction, Sections 2.A (orientation) and 2.B (dimensions, run-off and fence height), 1998.
- Illuminating Engineering Society, IES RP-6, recommended practice for sports lighting, light levels by class of play.
Planning a court
Precision Sports CT builds tennis courts across Connecticut and Florida, from private residential courts to resort installations such as Four Seasons Anguilla. If a full court will not fit, we will say so at the site walk rather than after design, and a tennis-to-pickleball conversion or a multi-sport surface is often the better answer.
See our tennis court construction service, our Connecticut service area, or request a quote.