Free web tools
Calculators that run in your browser
Each one uses the same logic as the Softgrove app it comes from. No sign-up, nothing installed, nothing sent to a server.
Fuel cost calculatorTrip fuel cost and cost per mile from distance, economy, and pump price; MPG from two fill-ups.From MotorLogHouseplant watering calculatorHow often to water 25 common houseplants, with your next watering dates.From PlantLogSourdough hydration calculatorDough hydration with levain included, or the water to hit a target, plus salt.From BannetonReef dosing calculatorMillilitres of alkalinity, calcium, or magnesium additive to reach a target, from your product label.From CoralogReading time calculatorDays to finish a book from your page pace, or pages per day to hit a deadline.From ReadLogVarroa mite calculatorMites per 100 bees from an alcohol wash or sugar roll, with the 3% treatment flag.From CombwiseFilm reciprocity failure calculatorCorrected long-exposure times for HP5 Plus, Tri-X, T-Max, Delta, Portra, Fomapan.From FilmRecipKiln firing cost calculatorElectric kiln firing cost from kilowatts, Orton cone, ramp rate, and electricity rate.From KilnCostCut list optimizerGuillotine cutting diagram and yield from stock and part sizes, kerf-aware.From BoardcutBoard feet calculatorTotal board feet and cost for a lumber order, across as many board sizes as you need.From BoardcutMiter angle calculatorCompound miter and bevel for crown molding, or a plain miter for baseboard and picture frames.From BoardcutWood shelf sag calculatorExpected shelf sag from span, depth, thickness, material, and load, Sagulator-style.From BoardcutPet age calculatorDog or cat age in human years — a 2020 DNA-methylation study for dogs, International Cat Care's chart for cats.From PawLogDog & cat calorie calculatorDaily calories (RER/MER) from weight, species, and life stage or status, the standard veterinary formula.From PawLogWhetstone angle calculatorSpine-lift height for a target sharpening angle, or the angle for a lift you used — freehand or guided rod.From WhetlogWallpaper roll calculatorRolls needed from wall width, ceiling height, roll size, pattern repeat, and door/window openings, metric or imperial.Dough temperature calculatorWater temperature to hit a target dough temp from room, flour, and levain temperature — the standard ×3/×4 baker's formula.From Banneton
Looking for something printable instead? See the free tracker templates.