Contact Lens Cost-per-Wear Calculator
Find out what your contacts really cost per day worn — and compare daily disposables against monthly lenses on your own wear schedule.
Cost per wear
Costs are in whatever currency you enter. Reusable lenses count on a calendar schedule (a monthly lens is replaced monthly whether or not you wear it daily), plus cleaning solution.
The honest cost of a lens is per day worn
Box prices make lenses hard to compare: a cheap box of monthlies and a pricier box of dailies can end up costing the same to wear, or wildly different, depending on how often you actually put them in. The fair comparison is cost per day worn — the yearly outlay spread over the days you really use lenses — and that depends as much on your habits as on the sticker price.
This calculator captures both. Tell it the price and box size, whether you wear lenses every day or just at weekends, and, for reusables, how long each lens lasts and what solution costs. It returns the annual total and the per-day figure so you can weigh daily disposables against monthlies on equal terms — a budgeting aid to use alongside, not instead of, your optometrist's advice.
Frequently Asked Questions
How is cost per wear calculated?
The tool works out how many lenses you get through in a year, multiplies by the price per lens, adds cleaning solution for reusables, and divides the annual total by the number of days you actually wear lenses (days per week × 52). That gives a per-day figure that's comparable across daily and monthly options.
Are daily disposables really more expensive?
Often, but not always. Dailies use a fresh pair every wearing day, so you buy far more lenses, but they need no solution and waste nothing on days you don't wear them. Reusables cost less per lens but are replaced on a calendar and add solution costs. If you only wear lenses a couple of days a week, dailies can work out cheaper — the calculator shows which wins for your pattern.
Why do reusable lenses count by calendar, not by wear?
A monthly or bi-weekly lens is designed to be discarded a set number of days after you first open it, regardless of how often you wear it in between, because protein and lipid build-up and infection risk climb over time. So the tool counts 365 divided by the replacement interval per eye, which is why a monthly lens is roughly 12 per eye per year.
What should I include in solution cost?
For reusable lenses, add your yearly spend on multipurpose or hydrogen-peroxide cleaning solution and any rewetting drops you buy routinely. Dailies don't need solution, so the tool sets it to zero for that mode.
Is the cheapest option always the best choice?
No. Comfort, eye health, how often you wear lenses, and convenience all matter, and the right lens is the one your eye-care professional fits and approves. Use this as a budgeting tool to compare options you've already been cleared to wear — not to switch lens type on price alone.
Educational budgeting estimate. The right lens type and wear schedule are a medical decision — follow the fitting and replacement advice of your eye-care professional.