Travel Photography

Calculate diagonal angle-of-view focal-length equivalence from actual focal length and exact source/reference image-area width and height.

Calculate thin-lens near/far focus limits and hyperfocal distance from actual focal length, focus distance, f-number, and an entered CoC criterion.

Calculate EV100 and ISO-normalized setting indexes plus an equal-exposure shutter time from aperture, seconds, ISO, and comparison aperture.

Translate a documented or tested flash guide number to a target ISO, then solve a nominal direct-flash f-number or same-unit distance.

Calculate thin-lens hyperfocal distance and its exact entered-criterion near limit from actual focal length, taking f-number, and explicit circle of confusion.

Calculate the largest whole-pixel golden-ratio candidate rectangle inside a source image, including exact edge exclusions and retained pixels.

Calculate print size at entered image PPI, then audit retained pixels, fill crop, effective PPI, and pixel differences for one exact target.

Convert TOML 1.1 to JSON with explicit policies for large integers, precise date/time tokens and non-finite values. Review configuration locally.

Estimate reading time at 200 wpm. Perfect for blog posts and articles. Get minutes and seconds. Free online text tool — process content instantly in your

Estimate appliance kWh and cost by day, week, average month, current calendar month, and year, with an optional regional CO₂ factor.

Free online trip budget calculator to estimate vacation costs for flights, hotels, food, and activities. Plan your travel budget before you book anything.

Free online hotel comparison calculator to compare nightly rates, resort fees, taxes, and total stay costs. Find the best hotel value for your trip.

Free online packing list generator to build travel checklists by trip type, duration, and climate. Never forget essentials on your next vacation again.

Free online gas cost calculator to estimate fuel expenses for commutes and road trips by MPG and gas price. Plan driving costs and compare vehicle efficiency.

Free online travel expense calculator to track and total trip spending across categories for reimbursement or budgeting. Log flights, meals, and lodging costs.

Calculate exposure value from aperture, shutter speed, and ISO. Free exposure triangle (ev) calculator for camera exposure, lens settings, and print sizing.

Calculate near/far depth of field from focal length, aperture, and subject distance. Free depth of field calculator for camera exposure, lens settings.

Calculate hyperfocal distance for maximum depth of field in landscape photography. Free hyperfocal distance calculator for camera exposure, lens settings.

Calculate morning and evening golden hour windows for outdoor photography. Free golden hour timer calculator for camera exposure, lens settings.

Calculate flash guide number or required aperture/distance for proper exposure. Free flash guide number calculator for camera exposure, lens settings.

Convert lens focal length to full-frame equivalent field of view. Free crop factor equivalent calculator for camera exposure, lens settings, and print sizing.

Calculate print resolution from image pixels and desired print size. Free print dpi calculator for camera exposure, lens settings, and print sizing.

Calculate maximum print size at a given DPI from camera megapixels. Free megapixel print size calculator for camera exposure, lens settings, and print sizing.