Calculator Tools

Free Online Calculator Tools

Real calculators that run entirely in your browser — nothing to install, no sign-up, no data leaving your device. Built by CalcSolver, the calculator that also hides a games list.

Tip Calculator

450K searches/mo

Tip amount, total and per-person split for any bill — with tipping norms for restaurants, delivery, salons, taxis and travel.

10–25% presets + custom
Split between up to 100 people
Round-up mode
Live comparison table

Concrete Calculator

550K searches/mo

Volume in cubic yards / feet / meters for slabs, footings, sonotube columns and fence-post holes — plus how many bags to buy.

Slab, footing, column & post-hole modes
40 / 60 / 80 lb bag counts
Crushed-stone tonnage
Quantity support

Time Card Calculator

201K searches/mo

Weekly and biweekly work hours with lunch breaks, overtime after 40 h/week, military time and optional gross-pay estimate.

Weekly & biweekly modes
Unpaid lunch deduction
Per-week overtime rules
Overnight shift support

Looking for math instead? The CalcSolver homepage calculator handles everyday arithmetic with keyboard support — and its Code Mode hides a few games behind the keypad. More single-purpose tools ship monthly; suggest one on the contact page.