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Hedera Token Service

Wrap & unwrap HBAR

Convert native HBAR into WHBAR, the token form smart contracts understand, and back. You only pay the network fee.

Wrap

Deposits HBAR with the WHBAR helper contract and credits the same amount of WHBAR to your account. No approval is involved.

Unwrap

Sends WHBAR back through the helper and returns the same amount of HBAR. Approval is granted for this exact amount and consumed by the unwrap.

The open-approval check

After every unwrap this page re-checks the approval on the network. If one survives, perhaps because you rejected the second signature, it says so and offers a one-tap revoke.