Tennis string decisions, all in one place
Measure change, choose a starting range, recognize a tired stringbed, and plan restring costs with source-backed guides and private browser tools.
Understand strings before you choose a tension
Learn how string material, gauge and pattern change the stringbed, look up the vocabulary, then compare broad starting ranges by string type.
How polyester, synthetic gut, multifilament, natural gut and hybrids are built, how each holds tension, and where its starting range sits.
GuideTennis String Gauge GuideWhat 15, 16, 17 and 18 gauge mean in millimetres, how thinner and thicker strings differ, and what the evidence says about gauge and spin.
GuideString Pattern and TensionWhy the same reference tension feels different in an open or dense pattern and a larger or smaller head, and how to compare racquets fairly.
ReferenceTennis Stringing GlossaryTwo-sentence definitions of 38 stringing and tension terms, each linked to the guide that explains it in depth.
ReferenceTension by Type & GoalCompare starting tensions by string type and goal, convert lbs and kg, and find a range for your racquet.
Measure and track your stringbed
Build a repeatable baseline before changing tension, string, or restring timing.
The full feature list: measurement, history, reminders, sessions, widgets, exports, and what PRO adds.
GuideBest Tennis String Tension AppsCompare current iPhone and Android tension-measurement apps by platform, history and workflow, with a clear publisher disclosure.
GuideTennis String Tension App AccuracyLearn what a phone tension reading represents, why it differs from a machine setting, and how repeatability and calibration support useful tracking.
GuideString Tension App vs. Tension MeterCompare phone apps, local mechanical testers, DT devices, and machine calibration tools by the question each answers.
GuideHow to Measure String TensionCompare practical measurement methods and use the in-page tension calculator.
ToolRacquet Tension CheckerCompare a current reading with your fresh-string baseline and preferred floor.
ToolMy Stringbed LogKeep racquets, setups and readings in this browser, compare each reading with your baseline, and export CSV.
Turn a broad range into a useful test
Start inside the frame and string guidance, then adjust one variable at a time.
Look up the manufacturer-published tension range for your frame and send it to the calculator.
DataTennis String DatabaseCompare manufacturer-published material, construction, shape and gauge for 120 strings.
ToolString Setup FinderFive questions to a starting tension range, string construction, restring window and monthly cost to test.
ToolTennis String Tension CalculatorTurn your racquet range, string construction, and playing goal into a transparent starting window, or plan one small adjustment to your current setup.
GuideHow to Talk to Your StringerBrief a stringer clearly: reference tension versus stringbed tension, what to ask for, and what a stringing receipt should record.
GuideHybrid String Tension GuideChoose mains, crosses, and split tension; document both sides and compare the complete hybrid from a fresh baseline.
GuideBest Tension for SpinSeparate spin physics from tension myths, then test a small starting-range adjustment.
GuideBest Tension for ControlChoose a control-oriented starting range without treating higher tension as a universal answer.
GuideTennis String Tension for Arm ComfortWhat tension, material, gauge and frame stiffness change about impact shock, the evidence class behind each, and how to test a softer setup. Equipment guidance, not medical advice.
GuideString Tension, Temperature and ClimateWhat heat, cold, a hot car, altitude, ball type and humidity change about your stringbed, with a seasonal helper that suggests an adjustment band to test.
Data69 Pro String SetupsFilter sourced mains, crosses, gauges, tensions, verification dates, and racquet context.
Recognize change before performance disappears
Combine hours, feel, visible wear, snapback, comfort, and measured change.
Compare how poly, multifilament, synthetic gut, natural gut, and hybrids age—then find your own useful hour window.
GuideWhen to RestringBuild a schedule around construction, playing hours, visible wear, and measured change.
ToolTennis String Tension LossCompare string constructions and estimate a directional loss curve from frequency and time.
GuidePoly String Tension LossUnderstand why polyester changes quickly and how to track a useful personal baseline.
GuideHow Many Hours Do Poly Strings Last?Find a personal polyester restring window from playing hours, tension history, and repeatable performance signals.
GuidePoly vs. Gut Tension LossCompare measured retention for polyester and natural gut without assuming one curve fits every setup.
GuideDead String SymptomsUse control, snapback, wear, comfort, hours, and measurement as one replacement decision system.
Compare value by playable hour
Estimate cadence and budget without treating sticker price as the whole cost.