Our calculators solve cycling problems using shared google sheets or openasapp.net. There is no charge but consider a donation or ask for a private copy.
Most are open access but some require “edit” permission in the top left of the sheet.
Openasapp.net sheets work from a browser or from a mobile.
| RELEASED | ||
| Body composition vs power | http://bit.ly/caheight | Very rough calculation of effect of body size on CDA and power |
| Chain wear calculator | http://fft.tips/chain | Predicts when your chain will wear out and need changing |
| Change my bar width | http://bit.ly/cawbars | Shows the effect of handlebar width on steering (for cyclingapps.net) |
| Climbing critical power | http://fft.tips/climb | Works out how hard you should go up climbs |
| Crank length change tool | http://bit.ly/cawcranks | Shows the effect of changing crank size (for cyclingapps.net) |
| CTL Ramp rate calculator | http://fft.tips/CTL | Works out how to change power or TSS based on CTL (aka fitness) ramp rates |
| Drafting savings calculator | http://fft.tips/draft | Works out the benefit of drafting in paceline, track or bunch |
| Drivetrain efficiency savings | http://fft.tips/drivetrain | Shows the efficiency savings of your drivetrain (eg 1x, big ring) |
| FastestTyreSolver | http://fft.tips/tyre | Finds the fastest tyre based on prediction of aero and rolling losses |
| FTP 20m=>60m Predictor | http://fft.tips/ftp | A better model for finding 60min best power from 20min power |
| Fueling and Pacing calculator | http://fft.tips/bonk | A clever calculator to work out your power and fueling over a long ride |
| Hub engagement quick calculator | https://goo.gl/VjyM2X | A quick calculator of hub engagement time |
| OSPW marginal gains | http://fft.tips/ospw | A way to show the pros and cons of installing an aftermarket OSPW |
| Pursuit 4000m calculator | http://fft.tips/pursuit | Compare yourself against Filippo Ganna in his 4000m WR |
| Power zones calculator | http://bit.ly/cawzones | Power zones in a really quick slider (made for cyclingapps.net) |
| Slam stem and bar savings | http://fft.tips/stem | Works out savings from stem and bar position on watts and time |
| Training periodization planner | http://fft.tips/tpp | Shows how to periodize your training all year around |
| Pro Training periodization planner | http://fft.tips/tpp3 | Shows how to periodize your training all year around |
| Training time-in-zone | http://fft.tips/tiz | Shows how training models effect your time in zone |
| Treadmill energy calculator | http://fft.tips/treadmill | This is how much energy it costs to run on various treadmill grades |
| Tyre by surface | http://fft.tips/surface | Finds the perfect tyre for any riding surface (pressure too!) |
| Tyre pressure solver | http://fft.tips/pressure | Find the optimal tyre pressure depending on weight and size |
| V02Max calculator | bit.ly/myvo2max | A little v02max to watts to run time calculator (for cyclingapps.net) |
| Velodrome Calculator | https://goo.gl/7Jcv43 | A handy little velodrome worksheet |
| Wind Pacing | http://fft.tips/wind | How to pace a race (out&back) or loop according to wind strength |
| Zwift Predictor | http://bit.ly/zwiftpredictor | Converts bike/tyre/course into zwift predicted finish time (for cyclingapps.net) |
| DATABASES | ||
| 500 Climbing bikes | http://goo.gl/clEWGl | A sheet of 500 climbing bikes |
| Deep Carbon Wheels | http://bit.ly/fftcarbon | A list of all carbon disc brake wheels |
| Disc brake bike finder | http://bit.ly/cawdiscwheel | A sheet of many disc brake bikes |
| Groupsets 2020 chart | http://fft.tips/cgroupsets | A bubble chart of groupsets |
| Helmets 2022 chart | http://fft.tips/chelmets | A bubble chart of helmets |
| History of cycling | https://goo.gl/cGYT6K | History of cycling by major results (for cyclingapps.net) |
| Road bike Finder | https://goo.gl/HsGbAZ | A list of road bikes up to 2019 |
| Superbikes 2020 chart | http://fft.tips/superbikes | A bubble chart of superbikes |
| NEW OR UNRELEASED | ||
| Altitude predictor | email us | Effect of altitude on power vs V02 max vs speed |
| Climb finder | email us | All the big climbs in the world in one big spreadsheet! |
| Virtual wind tunnel | email us | Calculator CDA or speed or power from common variables |
| Universal marginal gain calculator | email us | Works out the time saving of the top 100 marginal gain options |
| Detraining & deconditioning predictor | email us | Works out your FTP after having time off the bike |
| Drafting team pursuit track strategy | email us | Works out draft savings on the track, and a rotational strategy |
| Rank me as a cyclist | http://fft.tips/rankme | Ranks your w/kg and watts against realistic targets |
| Interval difficulty calc | http://fft.tips/difficulty | Calculates the difficulty of an interval series accurately |