26 tools · pay once · offline
Making and hobbies
Calculators for makers: pottery glazes, soap and candles, quilting, knitting, woodturning, cut lists, epoxy pours, 3D print quotes, RC planes, aquariums, telescopes, archery and more.
Pour Plan
epoxy resin calculator: river table and mould volume with waste, mix by weight from the volume ratio, pour layers with a dated timeline, cost per project
$6
Wick & Wax
candle making calculator: wax and fragrance per container and per batch, wick starting chart, cost and pricing, burn test log with a verdict
$6
Hangar
RC plane calculator: MAC, neutral point and CG from the planform, weight and balance with battery placement, motor, prop and battery power system
$7
Fert Lab
planted aquarium dosing calculator: EI and PPS-Pro dry salts to grams or a solution, weekly dosing plan, CO2 from pH and KH, GH booster
$6
Turf Plan
lawn fertilizer calculator: bag to spreader setting, season program by grass type with the nitrogen budget, seed and sprayer math
$6
Quiver
arrow builder and sight tape generator: total weight, FOC, KE, spine starting point, and a printable tape fitted to your own marks
$8
Ring & Stave
segmented turning calculator: ring segments, a vessel profile that becomes a cut list, and stave compound angles
$8
Stitch Math
knitting gauge converter, pattern resizer, evenly-spaced increases, shaping and row counter
$6
Glaze Chemist
pottery glaze calculator with unity formula, Stull chart, limits, batches and line blends
$8
Lye & Leaf Soap Calculator
lye and water for any oils, bar qualities, fatty acids and a printable batch sheet
$7
Poker Tournament Director
blind structure that ends on time, TV clock, chip split, payouts and ICM deals
$8
Stair & Stringer Calculator
riser and tread from the rise, code check, headroom, the stringer layout marks with the drop, and every count that passes
$5
Van Solar & Battery Sizer
watt-hours from your loads, the battery bank, solar by month and latitude, and the wire gauge and fuse for every run
$5
Telescope Eyepiece & Camera Calculator
power, exit pupil and true field for every eyepiece, which one frames each target, the gaps to buy, and camera sampling
$5
Guitar String Tension Calculator
tension per string for any tuning and scale, and the balanced gauge set that matches your feel
$5
Tile Layout Planner
no sliver cuts at the wall, the drawn layout, cut list, and boxes, grout and adhesive for the whole job
$5
Hydroponic Nutrient Calculator
grams of each salt for your target ppm, A/B stock tanks and EC
$5
Depth of Field & Focus Stacking Calculator
hyperfocal, near and far limits, diffraction, frames for a stack
$5
Pool Chemistry Calculator
water balance and exact chlorine, acid, alkalinity, calcium and stabilizer doses
$5
Garden Planting Calendar
sow, transplant, succession and harvest dates from your frost dates, 40 crops
$5
Woodworking Cut List Optimizer
parts packed onto your boards with kerf, cut diagrams, board feet and cost
$5
Reef Tank Dosing Calculator
alkalinity, calcium and magnesium consumption to an exact daily dose
$5
Quilt Yardage Calculator
fabric for blocks, sashing, borders, binding and backing, with the cutting plan
$5
D&D 5e Encounter Balancer
difficulty, adjusted XP and the adventuring-day budget, offline
$5
Golden Hour Shoot Planner
sun times, direction and height for any place and date, offline
$5
Ranked Session Tracker for League of Legends
Google Sheets + Excel
$3More categories
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