Free calculator
Electric toothbrush ownership-cost calculator
A $60 toothbrush can cost more than a $90 toothbrush over three years if replacement heads are expensive. This calculator makes the recurring cost visible.
Disclosure: We may earn a commission from some links on this page, at no extra cost to you.
Original cost model
3-year toothbrush cost comparison
The default scenario assumes the included first head is used initially and excludes a replacement bought exactly at the end of the time horizon.
| Brush | 1 year | 2 years | 3 years | Assumption |
|---|---|---|---|---|
| SURI Pro 2.0 Verified 2026-09-06 | $108.24 | $133.56 | $158.88 | Replace every 3 months. Source |
| SURI Core 1.0 Verified 2026-09-06 | $93.99 | $119.31 | $144.63 | Replace every 3 months. Source |
| Oral-B iO Series 3 Verified 2026-09-06 | $104.97 | $164.95 | $224.94 | Replace every 3 months. Source |
| Philips Sonicare 4100 Verified 2026-09-06 | $66.94 | $102.87 | $138.81 | Replace every 3 months. Source |
Change the assumptions
Use a preset, then change any number. This is a cost model—not a recommendation about how often a dental appliance or brush head should be replaced.
Estimated ownership cost$0.00
Replacement events0
Annualized$0.00
Current example: using the default 3-month head interval and current price snapshots, SURI Pro 2.0 comes out below Oral-B iO Series 3 over three years despite the higher handle price, because SURI's one-time replacement heads are cheaper per head. Promotions and retail prices can reverse the result, so edit the inputs.
What this model deliberately excludes
Taxes, optional travel cases, charger replacements, retailer loyalty discounts, subscription shipping and product failure outside warranty. Those are intentionally editable or excluded rather than guessed.