mempool/frontend/src/app/shared/components/fee-rate/fee-rate.component.html

<ng-container *ngIf="rateUnits$ | async as units">
  <ng-container *ngIf="units !== 'wu'">{{ fee / (weight / 4) | feeRounding:rounding }} <span *ngIf="showUnit" [class]="unitClass" [style]="unitStyle">sat/vB</span></ng-container>
  <ng-container *ngIf="units === 'wu'">{{ fee / weight | feeRounding:rounding }} <span *ngIf="showUnit" [class]="unitClass" [style]="unitStyle">sat/WU</span></ng-container>
</ng-container>