Free Online Calculators

Estimate how much of your startup you own after YC funding and any subsequent raise.

Compare the true cost of two cars side-by-side across financing, fuel, insurance, maintenance, and depreciation.

Compare grocery items by price per calorie, protein, fiber, or fat to find the best nutritional value for your money.

Find the optimal weekly meal plan that hits your calorie and protein targets within your grocery budget.

Find out whether to upgrade your CPU, GPU, both, or neither based on your current specs, target games, and desired performance.

Calculates how long to wait before putting freshly cooked food in the fridge or freezer — and whether it's safe to do so now.

Choose the best study mode — Pomodoro, Deep Work, or Mixed — based on your task, energy, and focus capacity right now.

Ranks a pending topic by urgency, difficulty, exam weight, and confidence to suggest your next best study action.

Decides whether your limited study time is better spent on active recall/practice or rewatching notes, based on confidence, time, and energy.

Turn missed work time into a guilt-free restart plan with a realistic next-session target and catch-up options.

Helps you choose between keeping files, Reset this PC, factory restore, or clean install based on your symptoms and backup status.

Determines whether a proposed GPU upgrade will physically fit, be safely powered, and avoid CPU bottleneck issues in your existing PC.