Quick answer
Whitening strips cost about $20-$60 a kit and LED kits about $30-$50, while dentist take-home trays run $150-$600 and in-office Zoom is $300-$1,000. Over a typical 5-year horizon, the lowest-cost route usually saves around $600-$700 versus repeat in-office sessions.
This is a cost comparison, not dental or medical advice; consult a professional for what is appropriate for you.
How the calculator works
Enter the prices you actually expect to pay for each method and how often you'd redo it, then pick a time horizon (5 years is a good default). The tool totals the multi-year cost of all four options - strips, an at-home LED kit, dentist take-home trays, and in-office (Zoom) - and shows the cheapest route plus your savings versus the priciest. Every number is cost only; nothing here speaks to results or safety.
The cost formula
Each method is a simple repurchase model. Strips and LED refills recur every year; trays charge gel only after the first year; in-office cost is just price times the number of sessions over the horizon:
stripsTotal = stripsKitPrice × cyclesPerYear × years
ledTotal = ledKitPrice + (refillPrice × refillsPerYear × years)
traysTotal = traysInitial + (gelPerYear × max(0, years − 1))
zoomTotal = pricePerSession × sessionsOverHorizon
perYear = methodTotal / years
savings = max(totals) − min(totals)2026 teeth whitening costs by method
Using 2026 US data: strips (e.g. Crest 3D Whitestrips) run about $20-$60 a kit; at-home LED kits about $30-$50 plus $25-$30 refill pods; dentist custom take-home trays $150-$600 with gel refills after; and in-office Zoom $300-$1,000 (premium up to about $1,500). None of these is covered by dental insurance because whitening is cosmetic.
Whitening strips vs dentist - cost over 5 years
Per kit, strips are the lowest upfront cost. Over five years the gap narrows because strips are repurchased two to four times a year, but the running total typically stays well below repeat in-office sessions. Adjust the cycles-per-year field to match how often you'd actually touch up.
Dentist take-home trays vs in-office Zoom
Take-home trays usually win on multi-year cost: you pay $150-$600 once, then only gel refills. In-office Zoom front-loads a single $300-$1,000 visit and adds up fast if you redo it every year or two as results fade. The session-count field lets you model your own redo cadence.
Cost per shade explained
2026 cost-per-shade framing puts professional whitening at roughly $17-$67 per shade per year and strips at about $20-$45 per shade per cycle (with two to four cycles a year). Treat these as rough ranges - shade gains vary by person, so the calculator focuses on dollars spent rather than shades, which it cannot promise.
When at-home whitening is NOT the cheapest route
If you only ever do one in-office visit and never touch it up, a single Zoom session can be comparable to years of strip repurchases for some people. And if you'd buy a pricey LED kit with frequent refills, its running cost can approach take-home trays. Plug in your own numbers to see where the lines cross - and remember this compares cost only, not whether a method is right for you.