Calculator paths
Real tasks, grouped. Each path bundles the three or four calculators you actually need — no rabbit holes, no maze.
Money & Career
3 pathsMake sense of your paycheck
Convert salary to hourly, check overtime pay, and see your real annual income before taxes.
Price a product for profit
Work out markup, target margin, and how a discount eats into your bottom line.
Start investing for the long term
See how compound interest grows a balance, project future value, and compare returns.
Health & Fitness
3 pathsLose weight the right way
Find your maintenance calories, set a safe deficit, and track body fat — no fad diet.
Train for your first race
Lock in a realistic goal pace, estimate your VO₂ max, and see what each run burns.
Get your hydration right
Estimate body water, daily intake, and how much you need around training and heat.
Home & DIY
3 pathsRenovate a room
Measure the space, then get exact paint, flooring and material quantities before you buy.
Tile a kitchen or bathroom
From square footage to tile count and grout, plan the order before you set the first piece.
Build a deck or stair
Lay out a spiral staircase, work out lumber quantities, and prime the surface for paint.
Everyday Life
6 pathsPlan a road trip
Convert distances, project fuel cost, and pin down the dates before you leave.
Cook by the numbers
Scale a recipe across units of volume, weight and oven temperature.
Ace your grades
Score a test, work backwards to the final you need, and project your semester GPA.
Tip and split the check
Settle a restaurant bill cleanly — tip percentage, per-person share, and the discount math behind a deal.
Cut your fuel bill
See what your car actually costs to run and where small changes save the most each month.
Keep track of dates
Age in any unit, days between two dates, and the next expiration on a label.
Nature & Sustainability
2 pathsShrink your carbon footprint
Measure the big three — diet, flights and plastic — then find where to cut.
Go solar at home
Size a panel array against your usage, project the savings on a monthly electricity bill.